Proceedings in Nonlinear Science Centre for Nonlinear Studies, The University, Leeds LS2 9NQ, UK Series co-ordinator: Arun V. Holden Proceedings in Nonlinear Science deal with all areas of nonlinear science and its applications, and generally consist of multi-author volumes associated with select conferences and workshops within this exciting field. This series runs in parallel with the Nonlinear Science: Theories and Applications series of monographs and texts, also published by Manchester University Press. Both provide a source of up-to-date research in an immediate form. This survey...